Mercurial > hg > wm

comparison Meerwald-dir/gen_kund3_sig.c @ 24:9f20bce6184e v0.7

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move directories, support netpbm 11
author Peter Meerwald-Stadler <pmeerw@pmeerw.net>
date Fri, 20 Dec 2024 13:08:59 +0100
parents Meerwald/gen_kund3_sig.c@ad1d224896c5
children
comparison
equal deleted inserted replaced
23:71dd4b96221b 24:9f20bce6184e
1 #include "wm.h"
2 #include "signature.h"
3
4 char *progname;
5
6 void usage(void) {
7 fprintf(stderr, "usage: %s [-e n] [-f n] [-F file] [-l n] [-n n] [-o file] [-q n] [-s file] [-S n] [-v n] file\n\n", progname);
8 fprintf(stderr, "\t-h\t\tprint usage\n");
9 fprintf(stderr, "\t-e n\t\twavelet filtering method (default 2)\n");
10 fprintf(stderr, "\t-f n\t\tfilter number (default 1)\n");
11 fprintf(stderr, "\t-F file\t\tfilter definition file (default 'filter.dat')\n");
12 fprintf(stderr, "\t-l n\t\tembedding level (default 1)\n");
13 fprintf(stderr, "\t-n n\t\twatermark bit length\n");
14 fprintf(stderr, "\t-o file\t\toutput file\n");
15 fprintf(stderr, "\t-q n\t\tsignature strength (default 4)\n");
16 fprintf(stderr, "\t-s file\t\tuse signature file's embedding information\n");
17 fprintf(stderr, "\t-S n\t\tseed\n");
18 fprintf(stderr, "\t-v n\t\tverbosity level\n");
19 exit(0);
20 }
21
22 int main(int argc, char *argv[]) {
23 FILE *in = stdin;
24 FILE *out = stdout;
25 FILE *sig = NULL;
26
27 char output_name[MAXPATHLEN] = "(stdout)";
28 char input_name[MAXPATHLEN] = "(stdin)";
29 char signature_name[MAXPATHLEN];
30 char *binstr;
31
32 int verbose = 0;
33 int c;
34 int i;
35 int l = 1;
36 int n = 0;
37 int s = 0;
38 int q = 4;
39 int e = 2;
40 int f = 1;
41 char F[MAXPATHLEN] = "filter.dat";
42
43 progname = argv[0];
44
45 wm_init();
46
47 while ((c = getopt(argc, argv, "e:f:F:h?l:n:o:q:s:S:v:")) != EOF) {
48 switch (c) {
49 case 'e':
50 e = atoi(optarg);
51 if (e < 0) {
52 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, e);
53 }
54 break;
55 case 'f':
56 f = atoi(optarg);
57 if (f <= 0) {
58 fprintf(stderr, "%s: filter number %d out of range\n", progname, f);
59 exit(1);
60 }
61 break;
62 case 'F':
63 strcpy(F, optarg);
64 break;
65 case 'h':
66 case '?':
67 usage();
68 break;
69 case 'l':
70 l = atoi(optarg);
71 if (l < 1) {
72 fprintf(stderr, "%s: embedding level out of range\n", progname);
73 exit(1);
74 }
75 break;
76 case 'n':
77 n = atoi(optarg);
78 if (n < 1 || n > 1000) {
79 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
80 exit(1);
81 }
82 break;
83 case 'o':
84 if ((out = fopen(optarg, "wb")) == NULL) {
85 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
86 exit(1);
87 }
88 strcpy(output_name, optarg);
89 break;
90 case 'q':
91 q = atoi(optarg);
92 if (q < 1) {
93 fprintf(stderr, "%s: signature strength %d out of range\n", progname, q);
94 exit(1);
95 }
96 break;
97 case 's':
98 if ((sig = fopen(optarg, "r")) == NULL) {
99 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
100 exit(1);
101 }
102 strcpy(signature_name, optarg);
103 break;
104 case 'S':
105 s = atoi(optarg);
106 break;
107 case 'v':
108 verbose = atoi(optarg);
109 if (verbose < 0) {
110 fprintf(stderr, "%s: verbosity level %d out of range", progname, verbose);
111 exit(1);
112 }
113 break;
114 }
115 }
116
117 argc -= optind;
118 argv += optind;
119
120 if (argc > 1) {
121 usage();
122 exit(1);
123 }
124
125 if (argc == 1 && *argv[0] != '-') {
126 if ((in = fopen(argv[0], "rb")) == NULL) {
127 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
128 exit(1);
129 }
130 else
131 strcpy(input_name, argv[0]);
132 }
133
134 if (sig) {
135 char line[32];
136 fgets(line, sizeof(line), sig);
137 if (strspn(line, "KD3SG") >= 5) {
138 if (n == 0)
139 fscanf(sig, "%d\n", &n);
140 else
141 fscanf(sig, "%*d\n");
142 if (q == 0)
143 fscanf(sig, "%d\n", &q);
144 else
145 fscanf(sig, "%*d\n");
146 if (e < 0)
147 fscanf(sig, "%d\n", &e);
148 else
149 fscanf(sig, "%*d\n");
150 if (f == 0)
151 fscanf(sig, "%d\n", &f);
152 else
153 fscanf(sig, "%*d\n");
154 if (!strcmp(F, ""))
155 fscanf(sig, "%[^\n\r]\n", F);
156 else
157 fscanf(sig, "%*[^\n\r]\n");
158 if (l == 0)
159 fscanf(sig, "%d\n", &l);
160 else
161 fscanf(sig, "%*d\n");
162 }
163 else {
164 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
165 exit(1);
166 }
167 fclose(sig);
168 }
169
170 if (s)
171 srandom(s);
172 else
173 srandom(time(NULL) * getpid());
174
175 if (n > 0) {
176 n_signature = fread(signature, sizeof(char), i = NBITSTOBYTES(n), in);
177 if (n_signature < i) {
178 fprintf(stderr, "%s: failed to read all %d signature bits from %s\n", progname, n, input_name);
179 exit(1);
180 }
181 }
182 else {
183 if (fscanf(in, "%128[^\n\r]", signature) == EOF) {
184 fprintf(stderr, "%s: failed to read signature bits from %s\n", progname, input_name);
185 exit(1);
186 }
187 n_signature = strlen(signature);
188 n = nbit_signature = NBYTESTOBITS(n_signature);
189 fprintf(stderr, "%s: got %d signature bits\n", progname, nbit_signature);
190 }
191
192 fprintf(out, "KD3SG\n");
193 fprintf(out, "%d\n", n);
194 fprintf(out, "%d\n", q);
195 fprintf(out, "%d\n", e);
196 fprintf(out, "%d\n", f);
197 fprintf(out, "%s\n", F);
198 fprintf(out, "%d\n", l);
199 fprintf(out, "%ld\n", random());
200 nbit_signature = NBYTESTOBITS(n_signature);
201 binstr = malloc((nbit_signature + 1) * sizeof(char));
202 sig_to_binstr(binstr);
203 fprintf(out, "%s\n", binstr);
204 free(binstr);
205
206 fclose(out);
207
208 exit(0);
209 }

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